4.013458Citric Acidfor HPLCC6H8O7 M.=192.12 CAS No. 77-92-9Guarantee analysisAssay (acidimetric) ≥ 98.0 %Sulphate (SO4) ≤ 0.005 %Heavy metals (as Pb)≤ 0.0005 %UV absorption (5% in H2O)λ 260 nm max 0.10λ 270 nm max 0.07λ 280 nm max 0.05λ 300 nm max 0.03λ 500 nm max 0.01suitability for RP gradient test complying